[#bsl-erase_if-03a]
= xref:bsl.adoc[bsl]::erase_if
:relfileprefix: ../
:mrdocs:

Erase all the elements in the specified vector `vec` that satisfy the specified predicate `predicate`. Return the number of elements erased.

== Synopsis

Declared in `<bslstl_vector.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class VALUE_TYPE,
    class ALLOCATOR,
    class PREDICATE>
vector<VALUE_TYPE, ALLOCATOR>::size_type
erase_if(
    xref:bsl/vector-00d.adoc[vector<VALUE_TYPE, ALLOCATOR>]& vec,
    PREDICATE predicate);
----


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